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Schedule III - Supplementary Insurance Information (Details) - USD ($) $ in Millions | 12 Months Ended
--- | ---
Dec. 31, 2024 | Dec. 31, 2023 | Dec. 31, 2022
Supplementary Insurance Information |  |  |
Deferred acquisition costs | $ 4,006.9 | $ 3,950.5 |
Market risk benefit asset | 199.5 | 153.4 |
Future policy benefits and claims | 48,179.4 | 46,826.5 |
Contractholder and other policyholder funds | 44,066.0 | 42,417.9 |
Market risk benefit liability | 62.1 | 133.2 |
Premiums and other considerations | 6,850.2 | 6,470.9 | $ 5,339.7
Net investment income | 4,449.2 | 4,091.9 | 3,838.5
Benefits, claims and settlement expenses | 8,072.6 | 7,788.2 | 6,631.3
Liability for future policy benefit remeasurement (gain) loss | 671.4 | (51.6) | (264.5)
Market risk benefit remeasurement (gain) loss | 30.3 | 29.1 | 125.3
Amortization of deferred acquisition costs | 392.5 | 389.8 | 386.9
Other operating expenses | 4,971.4 | 4,682.3 | 4,575.3
Retirement and Income Solutions |  |  |
Supplementary Insurance Information |  |  |
Deferred acquisition costs | 957.2 | 918.9 |
Market risk benefit asset | 199.5 | 153.4 |
Future policy benefits and claims | 29,818.3 | 29,161.9 |
Contractholder and other policyholder funds | 36,027.0 | 34,399.6 |
Market risk benefit liability | 62.1 | 111.9 |
Premiums and other considerations | 3,136.9 | 2,935.0 | 1,959.7
Net investment income | 3,061.6 | 2,674.3 | 2,252.2
Benefits, claims and settlement expenses | 5,183.5 | 4,653.5 | 3,328.1
Liability for future policy benefit remeasurement (gain) loss | (14.5) | (68.5) | (14.9)
Market risk benefit remeasurement (gain) loss | 50.6 | 33.7 | 131.2
Amortization of deferred acquisition costs | 95.2 | 95.8 | 101.0
Other operating expenses | 1,685.3 | 1,590.7 | 1,601.4
Principal Asset Management |  |  |
Supplementary Insurance Information |  |  |
Deferred acquisition costs | 5.9 | 7.7 |
Future policy benefits and claims | 4,129.0 | 4,595.6 |
Contractholder and other policyholder funds | 457.8 | 507.8 |
Market risk benefit liability |  | 21.3 |
Premiums and other considerations | 28.7 | 29.0 | 77.7
Net investment income | 568.3 | 628.6 | 840.6
Benefits, claims and settlement expenses | 423.0 | 477.6 | 725.9
Liability for future policy benefit remeasurement (gain) loss | 1.0 | 0.9 | (4.7)
Market risk benefit remeasurement (gain) loss | (20.3) | (4.6) | (5.9)
Amortization of deferred acquisition costs | 1.1 | 1.1 | 1.1
Other operating expenses | 1,565.4 | 1,544.2 | 1,502.1
Benefits and Protection |  |  |
Supplementary Insurance Information |  |  |
Deferred acquisition costs | 3,043.8 | 3,023.9 |
Future policy benefits and claims | 14,046.4 | 12,888.3 |
Contractholder and other policyholder funds | 7,940.8 | 7,870.8 |
Premiums and other considerations | 3,689.8 | 3,521.4 | 3,306.5
Net investment income | 594.5 | 549.5 | 564.2
Benefits, claims and settlement expenses | 2,460.4 | 2,647.7 | 2,553.7
Liability for future policy benefit remeasurement (gain) loss | 684.9 | 16.0 | (244.9)
Amortization of deferred acquisition costs | 296.2 | 292.9 | 284.8
Other operating expenses | 1,182.8 | 1,088.0 | 1,027.5
Corporate |  |  |
Supplementary Insurance Information |  |  |
Future policy benefits and claims | 185.7 | 180.7 |
Contractholder and other policyholder funds | (359.6) | (360.3) |
Premiums and other considerations | (5.2) | (14.5) | (4.2)
Net investment income | 224.8 | 239.5 | 181.5
Benefits, claims and settlement expenses | 5.7 | 9.4 | 23.6
Other operating expenses | $ 537.9 | $ 459.4 | $ 444.3

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- Definition Amount of remeasurement gain (loss) on liability for future policy benefit from application of revised benefit ratio as of contract issue. Includes, but is not limited to, remeasurement gain (loss) for annuitization insurance benefit, death and other insurance benefits, and traditional and limited-payment contracts. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Topic 944 -SubTopic 40 -Name Accounting Standards Codification -Section 45 -Paragraph 2 -Publisher FASB -URI https://asc.fasb.org/1943274/2147480112/944-40-45-2 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Topic 944 -SubTopic 40 -Name Accounting Standards Codification -Section 45 -Paragraph 1 -Publisher FASB -URI https://asc.fasb.org/1943274/2147480112/944-40-45-1 Reference 3: http://www.xbrl.org/2003/role/disclosureRef -Topic 944 -SubTopic 40 -Name Accounting Standards Codification -Section 45 -Paragraph 4 -Publisher FASB -URI https://asc.fasb.org/1943274/2147480112/944-40-45-4 + Details
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